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Physics help?
a cars speedometer reads 20 m/s after acceleration from standing start, for 25s. what was the magnitude of acceleration?
1 Answer
- Andrew SmithLv 76 years ago
If the acceleration was CONSTANT then
a = v/t = 20/25 = 0.8 m/s^2
Note that this is not realistic. Unless you continually alter the accelerator pedal the car puts out approximately constant POWER. So the acceleration is large initially at low speed and diminishes with increasing speed.
